SIEMENS 430/440 INVERTER/CONVERTER SCR Trigger Board TDB BOARD A5E00173192 A5EOO173192

Siemens A5E00173192 | A5E-Series Internal Drive Circuit Board — Siemens Industrial Drive PCB

Part Number: A5E00173192

Manufacturer: Siemens AG (Germany)

Product Type: Internal Drive Circuit Board — PCB Assembly

Product Family: Siemens A5E-Series Internal Drive Components

Application: Internal electronics board for Siemens industrial drive and inverter systems

Production Status: Discontinued by Manufacturer

Country of Origin: Germany

Overview

The A5E00173192 is a Siemens A5E-series internal drive circuit board — one of the many printed circuit assemblies used within Siemens' industrial drive and inverter platforms. The A5E prefix is Siemens' internal component numbering system applied across its drive families, from the MICROMASTER series through to SIMOVERT MASTERDRIVES and SINAMICS.

Each A5E-numbered assembly is a specific functional sub-board within a drive unit's electronics architecture, whether it serves a power supply, control signal, measurement, or interface function.

Siemens drive units are modular in their electronics construction. Rather than a single monolithic board, the internal electronics of a drive are divided into multiple PCB assemblies, each handling a defined set of functions. Some boards manage the switching power supply for the drive's control electronics.

Others handle analogue input and output signal conditioning, digital I/O interfacing, or fan and thermal management circuits.

Still others serve as interface boards between the drive's main control board and its power section.

The A5E00173192 is one such internal functional assembly within this layered architecture.

The board's presence in maintenance records typically comes to light when a drive is being repaired or its internal electronics replaced after a component-level failure.

Identifying the correct board by its A5E number is essential — the A5E designation is unique to a specific production assembly, and substituting a similar-looking board from a different part number can result in an incompatible circuit that does not function correctly in the drive's electronics stack.

Key Specifications

A5E Numbering and Board Identification

The A5E prefix in Siemens' internal part numbers stands for a specific class of spare and service parts produced at Siemens' German manufacturing facilities. These numbers appear on the board's own label, on the drive's internal wiring diagram, and in the drive's service documentation.

They are distinct from the drive's main market order number (6SE, 6SL, 6RA, and similar prefixes).

When a drive is opened for internal maintenance, the A5E number on each board is the definitive identifier for sourcing a replacement.

The number directly encodes the board's specific circuit design, component specification, and production revision — all of which must match for a replacement to function correctly.

The A5E00173192 sits in the lower-numbered range of A5E drive components, indicating it was manufactured during an earlier period in Siemens' drive product history.

Boards in this number range are commonly associated with legacy SIMOVERT MASTERDRIVES and early SINAMICS platforms, as well as with the MICROMASTER family that preceded SINAMICS in Siemens' drive portfolio.

Sourcing Discontinued A5E Boards

With the A5E00173192 discontinued by Siemens, sourcing options fall into two categories: the industrial aftermarket and specialist drive repair services.

The industrial aftermarket offers boards removed from drives that were decommissioned, boards held in legacy spare stock, and refurbished assemblies that have been cleaned, tested, and given a warranty by the repair company.

These are the most accessible source for parts no longer available through official Siemens channels.

Specialist drive repair companies — firms that rebuild Siemens MASTERDRIVES, MICROMASTER, and early SINAMICS units at board level — sometimes hold A5E component inventory as part of their repair exchange stock.

Some firms can also repair a failed A5E00173192 board at component level rather than replacing the whole assembly, which can be a cost-effective option when the board's failure mode is localised.

In either case, confirming the A5E00173192 number against the label on the installed board before sourcing is essential to avoid receiving an incorrect part.

Handling and ESD Precautions

All A5E-series PCB assemblies contain components sensitive to electrostatic discharge (ESD). Siemens' standard precautions apply: the board must not be placed on non-conductive surfaces (plastic desks, plastic trays), must not come into contact with clothing made of synthetic fibres, and must be transported and stored in conductive (metallised) packaging. A grounded anti-static wrist strap is required when handling the board.

The soldering iron tip must be earthed if any rework is performed.

These precautions apply to A5E00173192 at all stages — receiving inspection, storage, installation, and removal.

FAQ

Q1: A Siemens drive has an internal board labelled A5E00173192. How is this confirmed as the correct part before ordering a replacement?

Cross-reference the A5E number printed on the installed board's label against the drive's internal wiring diagram or parts list.

For MASTERDRIVES and MICROMASTER units, the parts list is typically found in the drive's spare parts documentation (available from Siemens Industry Support for registered users). 

The label on the board itself is the primary reference — do not rely on visual similarity to other boards when identifying the correct A5E number.

Q2: The A5E00173192 has failed. Is it worth attempting a component-level repair rather than sourcing a replacement board?

Component-level repair is viable when the failure is localised and the damaged components are identifiable — a burnt resistor, a failed capacitor, or a damaged connector. A5E-series boards from this period use standard through-hole and SMD components that are repairable by qualified electronics technicians.

However, if the failure is in a proprietary gate driver IC or a Siemens-specific ASIC that is not commercially available, board-level replacement is the only practical path.

Q3: Can the drive be temporarily operated without the A5E00173192 board installed?

This depends on the specific function the board performs within the drive's electronics stack. Boards that handle main control functions (power supply to the control board, main current feedback, gate drive) are mandatory for operation — the drive cannot run without them.

Boards serving auxiliary or supplementary functions may allow limited operation or a diagnostic mode. Consult the drive's schematic to determine whether A5E00173192 is in a critical signal path before attempting operation without it.

Q4: Is there a Siemens successor or modern equivalent for the A5E00173192 in a SINAMICS upgrade?

For drives being modernised from legacy platforms (MASTERDRIVES, older MICROMASTER versions) to SINAMICS, the entire electronics architecture changes — SINAMICS uses DRIVE-CLiQ for internal communications rather than the parallel board interfaces of the MASTERDRIVES generation.

There is no direct plug-in equivalent for individual A5E boards in SINAMICS. Modernisation replaces the complete drive unit, and the A5E00173192 has no individual successor component in the SINAMICS architecture.

Q5: How should the A5E00173192 be stored if it is held as a spare?

Store in its original conductive packaging or, if the original packaging is unavailable, wrap the board in metallised anti-static bag material and place in a rigid conductive container. Storage conditions should be dry, with temperature between -25°C and +70°C and no condensation.

Avoid placing the board near strong magnetic fields or vibration sources. Label the storage container clearly with the A5E part number and the date of removal from service, and include any relevant drive commissioning notes that may assist future installation.